COLR/CPAL(v1) Font Formats
COLRv1 is an improved version of COLRv0, this is also part of the OpenType specification. COLRv1 supports additional graphic capabilities. In addition to solid colors, gradient fills can be used, as well as more complex fills using other graphic operations, including affine transformations and various blending modes.
css at-rule: `@font-face`: opentype colrv1 rendering